CN102069642B - Liquid ejecting apparatus and method of controlling liquid ejecting apparatus - Google Patents
Liquid ejecting apparatus and method of controlling liquid ejecting apparatus Download PDFInfo
- Publication number
- CN102069642B CN102069642B CN201010518429.1A CN201010518429A CN102069642B CN 102069642 B CN102069642 B CN 102069642B CN 201010518429 A CN201010518429 A CN 201010518429A CN 102069642 B CN102069642 B CN 102069642B
- Authority
- CN
- China
- Prior art keywords
- mentioned
- liquid
- key element
- nozzle
- change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14274—Structure of print heads with piezoelectric elements of stacked structure type, deformed by compression/extension and disposed on a diaphragm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04516—Control methods or devices therefor, e.g. driver circuits, control circuits preventing formation of satellite drops
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04525—Control methods or devices therefor, e.g. driver circuits, control circuits reducing occurrence of cross talk
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
The present invention relates to a liquid ejecting apparatus capable of preventing cross talk even when a liquid is ejected simultaneously from a plurality of nozzles adjacent to each other in the same nozzle group and to a method of controlling the liquid ejecting apparatus. The ejection driving pulse DP is a voltage waveform including a preliminary expansion section p1, an expansion hold section p2, a contraction section p3. The contraction section p3 includes a first contraction component p3a in which the potential is varied in the minus direction from the expansion potential VH, an intermediate hold component p3b in which an intermediate potential VM1, which is the termination potential of the first contraction component p3a, holds for a given time, and a second contraction component p3c in which the potential is varied in the minus direction from the intermediate potential. The hold time of the intermediate hold component is greater than 0 and 0.12 Tc or less. The potential of the intermediate hold component is in the range from 50% to 60% of the potential of the hold section.
Description
Technical field
The present invention relates to liquid injection apparatus and the control method thereof of ink-jet printer etc., particularly can be by the pressure generation unit being applied liquid injection apparatus and the control method thereof that ejection drive pulse is controlled the injection of liquid.
Background technology
Liquid injection apparatus is the jet head liquid that possesses the nozzle with atomizing of liquids, sprays the device of various liquid from this jet head liquid.Representative as this liquid injection apparatus, for example, can enumerate: have ink jet recording head as jet head liquid (below, be called for short record head), by the nozzle from this record head make liquid black liquid to the recording medium (adhering to object) of record-paper etc. spray, adhere to the back form the ink-jet printer that point carries out the record of image etc. (below, be called for short printer.) image recording structure that waits.In addition, in recent years, be not limited to this image recording structure, liquid injection apparatus also is applied in the various manufacturing installations such as manufacturing installation of colour filter of LCD etc.
For example, there is following formation: in above-mentioned printer, have arrangement the nozzle rows (nozzle sets) that a plurality of nozzles form is set, by to the pressure generation unit (for example, piezoelectric vibrator and/or heater element etc.) apply ejection drive pulse and to its driving, to the variation of exerting pressure of the liquid in the balancing gate pit, utilize this pressure to change, from the nozzle ejection liquid that is communicated with the balancing gate pit.In traditional printer like this, when a plurality of nozzles adjacent nozzle rows spray black liquid simultaneously, because the vibration that the driving of above-mentioned pressure oscillation and/or pressure generation unit causes etc. influences each other between adjacent nozzle, spraying the occasion of black liquid and the occasion of spraying black liquid simultaneously from adjacent a plurality of nozzles separately from a nozzle, the what is called of the spray characteristic change of the speed of circling in the air of the black liquid that existence is sprayed and/or amount (weight, volume) etc. produces the problem of crosstalk (cross talk).Especially, in recent years in, for the requirement that the image quality of tackling document image improves, there is the tendency that forms with high density more in nozzle.The occasion of arranged in high density nozzle is easy to generate when adjacent nozzles is sprayed black liquid simultaneously and crosstalks.
Fig. 7 is the key diagram of the cross talk effects of conventional printer when spraying black liquid, more particularly, is the figure that observes the situation when spraying black liquid from each nozzle that constitutes nozzle rows to recording medium from the direction (transverse direction) of reporting to the leadship after accomplishing a task with the direction of circling in the air of black liquid.In addition, in figure, the straight line on top is represented the nozzle face of record head, and the straight line of bottom is represented the recording surface of recording medium.In addition, illustrate the nozzle of the #1～#36 in the whole nozzles (for example, the nozzle of #1～#180) that constitute nozzle rows.Fig. 7 (a) has represented when 3 nozzles spray black liquid from 6 adjacent nozzles, namely, nozzle ejection China ink liquid with the #1～#6 in the nozzle of the #1～#36 among the figure, #10～#15, #19～#24 and #28～#33, and the nozzle of #7～#9, #16～#18, #25～#27 and #34～#36 situation of (6 open, and 3 close) when not spraying black liquid.In addition, Fig. 7 (b) expression situation when whole nozzles (being the nozzle of #1～#36 the figure) of #1～#180 spray black liquid.And in figure, follow-up auxiliary droplet constitutes with separating with this main droplet by the main droplet of going ahead of the rest from the black drop of a nozzle ejection.
When spraying black liquid simultaneously from adjacent so a plurality of nozzles, because the vibration that produce this moment etc. influences each other between adjacent nozzle, therefore become: the speed of circling in the air of the black liquid of the nozzle of offside central portion in the adjacent nozzle group is more low, the more high tendency of the speed of circling in the air of the black liquid of the nozzle of offside end in the adjacent nozzle group.Thereby, observe the black liquid that sprays from these nozzle sets, each black liquid circles in the air with the state that is approximate arch form.Here, the black liquid that the speed of circling in the air is more high is attached to recording medium to get over the short time, and the speed of circling in the air is more slow, and the time till being attached to recording medium is more long.And, in record head and recording medium are relatively moved the formation that the limit prints of limit, corresponding to the speed of circling in the air of black liquid, the attachment position difference of the black liquid of each on the recording medium.Thereby each black liquid adheres to and the some group that forms also is arcuation ground bend alignment overlooking when watching at recording medium.As a result, produce the problem that the image quality cause document image etc. reduces.
In order to prevent such problem, for example, following formation has been proposed: a plurality of nozzle rows that multiple row is sprayed homochromy black liquid are set, wherein the interval of adjacent nozzle is set at greater than the formation spacing corresponding with log resolution (for example 2 times), and the nozzle ejection China ink liquid from each nozzle rows of staggering regularly is (with reference to patent documentation 1.)。In this patent documentation 1, for example, to constitute among the 1st cyan nozzle NC1 of the 1st cyan (cyan) nozzle rows C1 the nozzle every an arrangement, and constitute among the 2nd cyan nozzle NC2 of the 2nd cyan nozzle row C2 every one arrange and with azygous the 2nd cyan nozzle NC2 of the 1st cyan nozzle NC1 of previous selection, as a group A, the the 1st and the 2nd cyan nozzle NC1 that organizes A will do not belonged to, NC2 organizes B as another, change two groups by each predetermined timing, set the use group of objects for, be subordinated to the use group of objects that sets nozzle ejection China ink liquid and after recording medium forms point range, recording medium and shower nozzle are relatively moved, and carry out above-mentioned work repeatedly.That is, widen nozzle by employing and prevent above-mentioned crosstalking at interval.
[patent documentation 1] spy opens the 2009-012339 communique
But, in the formation of above-mentioned patent documentation 1, owing to spray the nozzle rows of (homochromy) of the same race black liquid multiple row is set, the complicated problems that becomes of the control when therefore existing the size of record head correspondingly to become big and black liquid to spray.
Summary of the invention
The present invention proposes in view of such problem, its objective is provides structure, the size that does not change jet head liquid, though from same nozzle sets adjacent a plurality of nozzles simultaneously atomizing of liquids also can prevent the liquid injection apparatus of crosstalking and the control method of liquid injection apparatus.
The present invention who proposes in order to reach above-mentioned purpose is a kind of liquid injection apparatus, and it possesses:
Jet head liquid has nozzle, the balancing gate pit that is communicated with this nozzle of atomizing of liquids and makes the pressure generation unit that produces pressure oscillation in the liquid in this balancing gate pit, and work that can be by this pressure generation unit is from nozzle ejection liquid;
Drive signal generation unit produces the driving signal comprise for the driving pressure generation unit from the ejection drive pulse of nozzle ejection liquid; With
Mobile unit makes the aforesaid liquid injector head and adheres to object to relatively move,
The limit makes aforesaid liquid injector head and the above-mentioned object that adheres to relatively move the limit from the said nozzle liquid droplets by above-mentioned mobile unit, makes it to be attached to the above-mentioned object that adheres to,
This liquid injection apparatus is characterised in that,
Above-mentioned ejection drive pulse is the voltage waveform that comprises with the lower part, and this part is:
Current potential makes the 1st change section of the volume-variation of above-mentioned balancing gate pit in the variation of the 1st direction;
To keep by balancing gate pit's volume that the 1st change section has changed certain hour, by the terminal potential of above-mentioned the 1st change section certain maintaining part; And
Current potential the rightabout of above-mentioned the 1st direction namely the 2nd direction change and make the 2nd change section of the balancing gate pit's volume-variation that has changed by above-mentioned the 1st change section,
Above-mentioned the 2nd change section has: current potential change from the terminal potential of above-mentioned the 1st change section to the 2nd direction the 1st change key element, with the 1st terminal potential that changes key element keep certain hour in the middle of keep that key element and current potential change from the 1st terminal potential that changes key element to the 2nd direction the 2nd change key element
Keep the retention time of key element above 0 and below 0.12Tc in the middle of above-mentioned,
Keeping the current potential of key element in the middle of above-mentioned is more than 50% and below 60% of current potential of above-mentioned maintaining part.
In addition, the present invention is a kind of control method of liquid injection apparatus, the aforesaid liquid injection apparatus possesses: jet head liquid, have nozzle, the balancing gate pit that is communicated with this nozzle of atomizing of liquids and make the pressure generation unit that produces pressure oscillation in the liquid in this balancing gate pit, work that can be by this pressure generation unit is from nozzle ejection liquid; Drive signal generation unit produces the driving signal comprise for the driving pressure generation unit from the ejection drive pulse of nozzle ejection liquid; And mobile unit, make the aforesaid liquid injector head and adhere to object and relatively move, the limit by above-mentioned mobile unit make the aforesaid liquid injector head and above-mentioned adhere to object relatively move the limit from the said nozzle liquid droplets, make it to be attached to the above-mentioned object that adheres to,
This control method is characterised in that,
Above-mentioned ejection drive pulse is to comprise: the 1st change section that current potential changes in the 1st direction, maintaining part and the current potential certain with the terminal potential of above-mentioned the 1st change section are the voltage waveform of the 2nd change section of the 2nd direction variation at the rightabout of above-mentioned the 1st direction,
Above-mentioned the 2nd change section has: the 1st current potential changes to the way from the terminal potential of above-mentioned the 1st change section to the 2nd direction till change key element, with the 1st terminal potential that changes key element keep certain hour in the middle of keep that key element and current potential change from the 1st terminal potential that changes key element to the 2nd direction the 2nd change key element
Keeping the current potential of key element in the middle of above-mentioned is more than 50% and below 60% of current potential of above-mentioned maintaining part,
Keep the retention time of key element above 0 and below 0.12Tc in the middle of above-mentioned,
The control method of aforesaid liquid injection apparatus comprises:
Make the 1st conversion step of volume-variation of above-mentioned balancing gate pit by above-mentioned the 1st change section;
Balancing gate pit's volume that will be changed in above-mentioned the 1st conversion step by above-mentioned maintaining part keeps the maintenance step of the scheduled time; And
Make the 2nd conversion step of balancing gate pit's volume-variation of in above-mentioned the 1st conversion step, having changed by above-mentioned the 2nd change section,
Above-mentioned the 2nd conversion step comprises: keep the maintenance of certain hour to handle and change key element by the above-mentioned the 2nd making the 2nd change process of balancing gate pit's volume-variation of keeping in this maintenances processing by the balancing gate pit's volume that the above-mentioned the 1st changes the 1st change process till key element makes balancing gate pit's volume-variation of having changed in the way in above-mentioned the 1st conversion step, will change in the 1st change process
Retention time during above-mentioned maintenance is handled is above 0 and below 0.12Tc.
According to the present invention, the 2nd change section of ejection drive pulse has: current potential changes key element from the terminal potential of the 1st change section to the 1st of the 2nd direction variation, keep middle key element and the current potential of keeping of certain hour to change key element from the 1st terminal potential that changes key element to the 2nd of the 2nd direction variation the terminal potential of the 1st variation key element, the retention time of middle maintenance key element is set for above 0 and below 0.12Tc, the potential setting of middle maintenance key element becomes more than 50% and below 60% of current potential of maintaining part, in the way of the volume-variation that makes the balancing gate pit, make the variation of volume stop the only a bit of time, thereby, compare with the occasion that does not stop ground one gas (continuously) variation on the way, can suppress the rapid variation of the pressure in the balancing gate pit.Thereby adjacent a plurality of nozzles during atomizing of liquids, can reduce crosstalking of producing between adjacent nozzle simultaneously from nozzle rows.As a result, reduce from the speed difference that circles in the air of the drop of these nozzle ejection, thereby can prevent from spraying the attachment position skew of the drop on the object.In addition, according to the present invention, get final product owing to only change the design of ejection drive pulse, therefore can under the situation that change and/or the complexity of the structure that does not need to carry out jet head liquid, size are controlled, reduce simply and crosstalk.
Description of drawings
Fig. 1 is the stereogram that the summary of explanation printer constitutes.
Fig. 2 be the declare record head formation want portion's sectional view.
Fig. 3 is the block diagram that the electricity of explanation printer constitutes.
Fig. 4 is the oscillogram of the formation of explanation ejection drive pulse.
Fig. 5 is near the sectional view of nozzle of the change of the meniscus (meniscus) when illustrating from nozzle ejection China ink liquid.
Fig. 6 is the schematic diagram of the situation when spraying black liquid from each nozzle that constitutes nozzle rows to recording medium in the explanation printer of the present invention.
Fig. 7 is the schematic diagram of the situation when spraying black liquid from each nozzle that constitutes nozzle rows to recording medium in the traditional printer of explanation.
[symbol description]
1... printer, 2... record head, 17... piezoelectric vibrator, 25... balancing gate pit, 27... nozzle, 41... control part, 43... drive signal generation circuit
The specific embodiment
Below, implement form of the present invention with reference to description of drawings.In addition, in following examples, as preferred concrete example of the present invention, carried out various restrictions, but scope of the present invention just is not limited to these forms as long as there is not special expression to limit the record of content of the present invention in the following description.In addition, below, as liquid injection apparatus of the present invention, for example understand inkjet recording device (hereinafter referred to as printer).
Fig. 1 is the stereogram of the formation of printer 1.This printer 1 roughly possesses: record head 2 has been installed as jet head liquid, and the balladeur train 4 of black liquid box 3 releasably has been installed; The pressing plate 5 that below record head 2, sets; Making balladeur train 4 is the balladeur train travel mechanism 7 that moves back and forth of main scanning direction (mobile unit a kind of) at the paper cross direction as the record-paper 6 (adhering to a kind of of object) of recording medium; And with the paper advance mechanism 8 of the sub scanning direction transfer sheet 6 of main scanning direction quadrature, and constitute.
Balladeur train 4 is installed to the guide rod 9 that sets up at main scanning direction with a state that is supported by axle, by the work of balladeur train travel mechanism 7, moves at main scanning direction along guide rod 9.The position of the main scanning direction of balladeur train 4 is detected by linear encoder 10, and its detection signal is that encoder pulse is sent by the control part 41 (with reference to Fig. 3) to printer controller 35.Thereby, control part 41 can be on one side according to the scanning position from the encoder pulse identification balladeur train 4 (record head 2) of this linear encoder 10, on one side the writing task (injection work) that undertaken by record head 2 of control etc.
The end regions in the posting field outside in the moving range of balladeur train 4 is set initial (home) position that becomes the scanning basic point.Original position in the present embodiment, the nozzle that has disposed seal record 2 forms the cover element 11 of face (nozzle plate 21: with reference to Fig. 2) and is used for the Wiping member 12 that the wiping nozzle forms face.Printer 1 constitutes: can make in the end from this original position to opposition side balladeur train 4 (record head 2) mobile remove Cheng Yidong the time and the return that to the original position side balladeur train 4 returned from the end of the opposition side two-way so-called bidirectional record that carries out shorthand and/or image etc. on record-paper 6 when moving.
Fig. 2 be the above-mentioned record head 2 of explanation formation want portion's sectional view.Channel unit 15 that this record head 2 possesses housing 13, the oscillator unit of taking in 14 in this housing 13, engage with the bottom surface (front end face) of housing 13 etc.Above-mentioned housing 13 is made by for example epoxy resin resin, its inner sky portion 16 of taking in of taking in oscillator unit 14 that forms.Oscillator unit 14 possesses a kind of piezoelectric vibrator 17 of bringing into play function as the pressure generation unit; The fixed head 18 that engages with this piezoelectric vibrator 17; Supply with the flexible cable 19 that drives signals etc. to piezoelectric vibrator 17.Piezoelectric vibrator 17 is cascade types made from the cutting of broach shape by the piezoelectric board that piezoelectric body layer and electrode layer interaction cascading are formed, be with the piezoelectric vibrator of the telescopic compressional vibration pattern of the direction of stacked direction quadrature.
Said nozzle substrate 21 is by having worn the sheet material that the metallic plate of the stainless plate of a plurality of nozzles 27 etc. or silicon single crystal substrate etc. constitute to form the corresponding spacing of density (for example 180dpi) row shape with ink dot.Be provided with the row (nozzle sets) of a plurality of nozzles 27 at this nozzle plate 21, a nozzle rows is made of for example 180 nozzles 27.Record head 2 in the present embodiment can be installed and store not homochromy black liquid (liquid among the present invention a kind of), be specially 4 black liquid boxes 3 of black liquid of total 4 looks of cyan (C), carmetta (M), yellow (Y), black (K), with these looks corresponding, form the nozzle rows that adds up to 4 row at nozzle plate 21.
Above-mentioned elastic plate 22 is the surperficial stacked dual structures of elastomer film 29 at support plate 28.In the present embodiment, adopting with metallic plate a kind of is stainless plate as support plate 28 and at the surface laminated resin molding of this support plate 28 composite board as elastomer film 29, makes elastic plate 22.At this elastic plate 22, be provided with the diaphragm portion 30 of the volume-variation that makes balancing gate pit 25.In addition, be provided with the flexible part 31 of the part of sealed reservoir 23 at this elastic plate 22.
Above-mentioned diaphragm portion 30 is partly removed support plate 28 by etching processing etc. and is made.That is, this diaphragm portion 30 comprises: the island portion 32 that engages with the front end face of piezoelectric vibrator 17 and the thin-walled elastic portion 33 of this island portion 32 of encirclement.Above-mentioned flexible part 31 is same with diaphragm portion 30, and the support plate 28 in the zone of the opening surface subtend by removal liquid reservoirs 23 such as etching processing is made, as the damper performance function of the pressure oscillation that is absorbed in the liquid that liquid reservoir 23 stores.
Above-mentioned island portion 32 engages with the front end face of piezoelectric vibrator 17, and is therefore flexible by the free end that makes this piezoelectric vibrator 17, can make the volume change of balancing gate pit 25.Follow this volume change, produce pressure oscillation in the black liquid in balancing gate pit 25.Record head 2 utilizes this pressure oscillation to spray black drop from nozzle 27.
Fig. 3 is the block diagram that the electricity of printer 1 constitutes.This printer 1 is made of printer controller 35 and print engine 36 summarys.Printer controller 35 possesses: be transfused to wherein external interface (exterior I/F) 37 from printed data of the external device (ED) of master computer etc. etc.; The RAM38 of store various kinds of data etc.; The ROM39 of the control routine that storage is handled for various data etc.; Carry out the control part 41 of the control of each several part; The oscillating circuit 42 of clocking; Produce to supply with the drive signal generation circuit 43 (drive signal generation unit among the present invention a kind of) of the driving signal of record head 2; Be used for to record head 2 outputs by printed data press the internal interface (inner I/F) 45 that ink dot launches the pixel data that obtains and/or driving signal etc.
Control part 41 is used for generating the control signal of driving signal COM for the record head control signal of the work of control record head 2, to drive signal generation circuit 43 outputs to record head 2 outputs.The record head control signal for example is transmission clock CLK, pixel data SI, latch signal LAT, change (change) signal CH1.These latch signals and/or change signal regulation constitute the supply timing of each pulse that drives signal COM.
In addition, control part 41 is according to above-mentioned printed data, via from the RGB color specification system look conversion process to the CMY color specification system, make the data of many gray scales reduce to the halftone process of predetermined gray scale, the data after the halftone process be arranged with predetermined arrangement mode by black liquid kind (by nozzle rows) and the dot pattern that expands into the dot pattern data launches to handle etc., the pixel data SI that the injection that generates record head 2 is adopted in controlling.This pixel data SI is the data relevant with the pixel of the image that will print, and is spray control information a kind of.Here, pixel is illustrated in and adheres on the recording medium that object is record-paper etc. imaginaryly that determined point forms the zone.Pixel data SI of the present invention comprises the gradation data relevant with the size (or amount of the black liquid that sprays) of the having or not of the point that forms (or black liquid spray have or not) and point on the recording medium.In the present embodiment, pixel data SI is made of the 2 value gradation datas that add up to 2 bits.In the gray value of 2 bits, [00] corresponding with the non-record that does not spray black liquid (little vibration), [01], with the record of mid point corresponding [10] and with a little bigger record corresponding [11] corresponding with the record of point are arranged.Thereby the printing function in the present embodiment is carried out record with 4 gray scales.
The formation of print engine 36 sides then, is described.Print engine 36 comprises record head 2, balladeur train travel mechanism 7, paper advance mechanism 8 and linear encoder 10.Record head 2 and each nozzle 27 be corresponding to possess a plurality of shift registers (SR) 46, latch 47, decoder 48, level translator (LS) 49, switch 50 and piezoelectric vibrator 17.Synchronous from the pixel data (SI) of printer controller 35 and the clock signal (CK) of coming self-oscillating circuit 42, to shift register 46 by serial transfer.
Then, decoder 48 is exported the pulse choice data with the opportunity that is received as of latch signal (LAT) or channel signal (CH) to level translator 49.This occasion, the pulse choice data begin to be transfused in order level translator 49 from upper bit.This level translator 49 plays the function of voltage amplifier, is the occasion of " 1 " in the pulse choice data, and output boosts to the voltage of actuable switch 50, the signal of telecommunication of the voltage of tens volts of degree for example.The pulse choice data of " 1 " after being boosted by level translator 49 are supplied to switch 50.Be supplied to the input side of this switch 50 from the driving signal COM of drive signal generation circuit 43, the outlet side of switch 50 is connected with piezoelectric vibrator 17.
Then, the work of pulse choice data control switch 50, that is, the injection pulse in the control driving signal is to the supply of piezoelectric vibrator 17.For example, the pulse choice data of input switch 50 be " 1 " during in, switch 50 becomes connection status, corresponding injection pulse is supplied to piezoelectric vibrator 17, the potential level of piezoelectric vibrator 17 is copied the wave form varies of this injection pulse.On the other hand, the pulse choice data be " 0 " during in, do not make the signal of telecommunication of switch 50 work from level translator 49 output.Thereby switch 50 becomes off-state, and injection pulse is not supplied to piezoelectric vibrator 17.
Fig. 4 is the oscillogram of the formation of the included ejection drive pulse DP of the driving signal COM of explanation drive signal generation circuit 43 generations.
Shown in figure, ejection drive pulse DP comprises: preparation bulge p1 (suitable with the 1st change section), expansion maintaining part p2 (suitable with maintaining part), contraction flow region p3 (suitable with the 2nd change section), contraction maintaining part p4, vibration damping bulge p5, vibration damping maintaining part p6 and recovery bulge p7.Preparation bulge p1 is that current potential changes (risings) to the corrugated part of expansion current potential VH in positive direction (suitable with the 1st direction) from reference potential VB with certain gradient, and expansion maintaining part p2 is by the terminal potential of preparing bulge p1 namely expand current potential VH and certain corrugated part.In addition, contraction flow region p3 is that current potential changes (decline) to the corrugated part that shrinks current potential VL in negative direction (suitable with the 2nd direction) from expansion current potential VH, and shrinking maintaining part p4 is certain corrugated part by shrinking current potential VL.And, vibration damping bulge p5 is that current potential changes (rising) to the corrugated part of vibration damping expansion current potential VM2 with certain gradient from shrinking current potential VL in positive direction, vibration damping maintaining part p6 is certain corrugated part by vibration damping expansion current potential VM2, and recovering bulge p7 is current potential returns to reference potential VB from vibration damping expansion current potential VM2 corrugated part.
Above-mentioned contraction flow region p3 is characterised in that, comprising: current potential change from expansion current potential VH to negative direction (decline) the 1st shrink key element p3a (with the 1st to change key element suitable), with the 1st terminal potential of shrinking key element p3a be intermediate potential VM1 with certain hour keep in the middle of keep key element p3b (keeping the key element suitable with the centre), current potential to change the 2nd contraction key element p3c (suitable with the 2nd variation key element) of (declines) from middle current potential VM1 to negative direction and constitute.That is, contraction flow region p3 constitutes, and current potential is changed to the variation that has only stopped current potential the way of shrinking current potential VL in a bit of time from expansion current potential VH.
The middle current potential that keeps key element p3b is current potential that intermediate potential VM1 sets expansion maintaining part p2 for more than 50% and below 60% of current potential VH that namely expands.In addition, the 2nd electric potential gradient (the potential change amount of time per unit) of shrinking key element p3c is set for steeper than the electric potential gradient of the 1st contraction key element p3a.Specifically, the 2nd electric potential gradient of shrinking key element p3c becomes the 1st precipitous degree of 2 times of degree of shrinking the electric potential gradient of key element p3a.The top that keeps key element p3b from the centre is retention time Wh2 to the time of terminal, and the vibration period of the pressure vibration that produces in the black liquid balancing gate pit 25 in is set the interior value of scope shown in following (1) for when being made as Tc.
0＜Wh2≤0.12Tc...(1)
Here, above-mentioned Tc is determined inherently by shape, size and the rigidity etc. of each member of formation of nozzle 27, balancing gate pit 25, black liquid supply port 24 and piezoelectric vibrator 17 etc.This intrinsic vibration period Tc can for example be represented by following formula (2).
Tc＝2π√[〔(Mn×Ms)/(Mn+Ms)〕×Cc]...(2)
Wherein, in the formula (2), Mn is the inertia in the nozzle 27, and Ms is the inertia in the black liquid supply port 24, and Cc is flexibility (volume-variation of per unit pressure, the degree that expression is soft of balancing gate pit 25.)。In addition, in the above-mentioned formula (2), inertia M represents the easy mobility of the liquid in the stream of nozzle 27 grades, in other words, is the quality of the liquid of per unit sectional area.If the density of fluid is ρ, with the sectional area of the face that flows down the direction quadrature of the fluid of stream be S, when the length of stream was L, inertia M can be similar to following formula (3) and represent.
M＝(ρ×L)/S...(3)
In addition, Tc is not limited to the value of above-mentioned formula (2) regulation, so long as the vibration period that the balancing gate pit 25 of record head 2 has gets final product.
When the ejection drive pulse DP of above-mentioned formation is supplied to piezoelectric vibrator 17, at first, p1 makes piezoelectric vibrator 17 shrink in the leement duration direction by the preparation bulge, follow in this, balancing gate pit 25 from the benchmark cubical expansion corresponding with reference potential VB to the allowance for expansion corresponding with expansion current potential VH (the 1st conversion step).By this expansion, shown in Fig. 5 (a), the surface of the black liquid in the nozzle 27 (meniscus) 25 sides (upside among the figure) are sucked significantly to the balancing gate pit, and supply with black liquid from liquid reservoir 23 sides in 25 to the balancing gate pit by black liquid supply port 24.The swelling state of this balancing gate pit 25 is kept (maintenance step) in during the whole supply of expansion maintaining part p2.
After expansion maintaining part p2 keeps swelling state, be supplied to contraction flow region p3, corresponding to this, piezoelectric vibrator 17 stretches.Follow in this, balancing gate pit 25 is retracted to the retraction volume corresponding with shrinking current potential VL (the 2nd conversion step) from allowance for expansion.As mentioned above, contraction flow region p3 shrinks key element p3a, the middle key element p 3b of maintenance by the 1st and the 2nd contraction key element p3c constitutes, therefore in the 2nd conversion step, at first, by the 1st contraction key element p3a, make balancing gate pit 25 be retracted to the middle volume corresponding with intermediate potential VM1 (the 1st change process) from allowance for expansion.Thereby the black liquid in the balancing gate pit 25 is pressurized, and shown in Fig. 5 (b), the middle body of meniscus is extruded to ejection side (downside among the figure), and this part of extruding is extended with the fluid column shape.Then, keep key element p3b in the middle of supplying with, middle volume is only kept (keeping handling) at above-mentioned time Wh2.Thereby the stretching, extension of piezoelectric vibrator 17 temporarily stops.During this period, shown in Fig. 5 (c), the fluid column of meniscus central portion extends to injection direction by inertia force, but because during this period the black liquid in the balancing gate pit 25 is not pressurized, has therefore correspondingly suppressed the extension of fluid column.
After centre maintenance key element p3 maintenance, by the 2nd contraction key element p3c, compare with the 1st occasion of shrinking key element p3a, make piezoelectric vibrator 17 stretch fast, make the volume of balancing gate pit 25 sharply be pressurized to retraction volume (the 2nd change process) from middle volume.Thereby shown in Fig. 5 (d), meniscus all is extruded to injection direction, and the rear end part of fluid column is accelerated.Then, meniscus and column separation, the part after the separation is sprayed and is circled in the air from nozzle 27 as black drop.Follow-up auxiliary droplet Ds forms injected black drop with separating with this main droplet Dm by the main droplet Dm that goes ahead of the rest.In the present embodiment, by the 2nd contraction key element p3, make the rear end part that becomes the fluid column of auxiliary droplet Ds be accelerated, therefore compare the speed of the circling in the air height of auxiliary droplet Ds with the speed of circling in the air of main droplet Dm.Thereby, be ejected into from nozzle 27 till the recording surface of recording medium adheres to during, main droplet Dm and auxiliary droplet Ds are integrated.Thereby the point that adheres to formation at the recording surface of recording medium becomes sub-circular or oval in shape.
Behind contraction flow region p3, by shrinking maintaining part p4, make the contraction state of balancing gate pit 25 keep certain hour.During this period, the pressure of the black liquid in the balancing gate pit 25 that reduces owing to the injection of black liquid since its intrinsic vibration rise again.Rise regularly accordingly with this, vibration damping bulge p5 is applied to piezoelectric vibrator 17, and balancing gate pit 25 expand into the vibration damping allowance for expansion from retraction volume.Thereby, reduced the pressure oscillation (residual vibration) of the black liquid in the balancing gate pit 25.The vibration damping allowance for expansion of this balancing gate pit 25 is kept certain hour by vibration damping maintaining part p6.Then, by recovering bulge p7, slowly expand and return to normal volume in balancing gate pit 25.
As mentioned above, be that allowance for expansion changes to the way that minimum volume is retraction volume from maximum volume at the volume that makes balancing gate pit 25, make the variation of volume only stop a bit of time, thereby, with do not stop occasion that ground one gas changes to retraction volume on the way from allowance for expansion relatively, suppressed the rapid variation of the pressure in the balancing gate pit 25.Thereby, when adjacent a plurality of nozzles 27 spray black liquid simultaneously from nozzle rows, reduced crosstalking of producing between adjacent nozzle.As a result, the speed difference that circles in the air of the black drop that sprays from these nozzles 27 reduces, and can prevent the attachment position skew of the black drop on the recording medium thus.In addition, get final product owing to only change the design of ejection drive pulse DP, therefore can under the situation that change and/or the complexity of the structure that does not need to carry out record head 2, size are controlled, reduce simply and crosstalk.
Fig. 6 is the figure that observes the situation when spraying black liquid from each nozzle 27 that constitutes nozzle rows to recording medium from the direction of reporting to the leadship after accomplishing a task with the direction of circling in the air of black liquid.In figure, the straight line on top is represented the nozzle face (face of the ejection side of nozzle plate 21) of record head 2, and the straight line of bottom is represented the recording surface of recording medium (record-paper 6).In addition, illustrate the nozzle 27 of the #1～#36 in the whole nozzles 27 (for example, the nozzle 27 of #1～#180) that constitute nozzle rows.The situation that Fig. 6 (a) expression is sprayed black liquid every 3 nozzles from 6 adjacent nozzles 27, more particularly, represented to spray black liquid from the nozzle 27 with #1～#6, #10～#15, #19～#24 and #28～#33 in the nozzle 27 of the #1～#36 the figure, and the nozzle 27 of #7～#9, #16～#18, #25～#27 and #34～#36 does not spray the situation of the situation (6 open, and 3 close) of black liquid.In addition, Fig. 6 (b) expression situation when whole nozzles 27 (nozzle 27 of #1～#36 the figure) of #1～#180 spray black liquid.
In the printer 1 of the present invention, when spraying black liquid simultaneously from adjacent a plurality of nozzles 27, interactional pressure vibration is lowered between adjacent nozzle, and therefore, the speed difference that circles in the air of the black drop that sprays from each nozzle 27 is suppressed.Thereby, the black liquid (main droplet and auxiliary droplet) that observation is sprayed respectively from these nozzle sets of spraying objects, then with prior art in each black liquid with the situation that is approximate arch form state and circles in the air relatively, in the printer 1 of the present invention, as shown in Figure 6, the state of horizontal line circles in the air to become roughly.Thereby each black liquid is attached to recording medium and the some group that forms is also arranged in a straight line overlooking when seeing.In addition, can shorten the distance of main droplet and auxiliary droplet, can improve at recording medium and adhere to these drops and the some shape that forms.
But, the invention is not restricted to above-described embodiment, can carry out various distortion according to the record of technical scheme.
The waveform of ejection drive pulse DP constitutes the example that is not limited to above-described embodiment.In a word so long as comprised at least current potential the 1st direction change and make the volume-variation of balancing gate pit 25 the 1st change section, make the balancing gate pit's volume that changes by the 1st change section keep the certain maintaining part of the terminal potential by the 1st change section of certain hour and current potential the rightabout of the 1st direction namely the 2nd direction voltage waveform that changes the 2nd change section that makes the balancing gate pit's volume-variation that has changed by above-mentioned the 1st change section get final product.
In addition, in above-described embodiment, as pressure generation unit example the piezoelectric vibrator 17 of so-called longitudinal vibration ejector half, but be not limited thereto, for example, also can adopt the piezoelectric element of so-called bending vibration type.This occasion, about illustrative ejection drive pulse DP, the change direction that becomes current potential i.e. the waveform of counter-rotating up and down.
The present invention is so long as the liquid injection apparatus that available a plurality of driving signal controlling is sprayed, then be not limited to printer, also go for various inkjet recording devices such as draught machine, picture unit, duplicator, tape deck liquid injection apparatus in addition, for example, display manufacturing apparatus, electrode manufacturing apparatus, chip manufacturing device etc.In the display manufacturing apparatus, spray the solution of the material of all kinds of R (red), G (green), B (indigo plant) from look material injector head.In addition, in the electrode manufacturing apparatus, spray aqueous electrode material from electrode material injector head.In the chip manufacturing device, spray the organic solution of organism from organism organic matter injector head.
Claims (2)
1. liquid injection apparatus, it possesses:
Jet head liquid, it has nozzle, the balancing gate pit that is communicated with this nozzle of atomizing of liquids and makes the pressure generation unit that produces pressure oscillation in the liquid in this balancing gate pit, can pass through the work of this pressure generation unit from nozzle ejection liquid;
Drive signal generation unit, its generation comprise makes the driving signal of liquid from the ejection drive pulse of nozzle ejection for the driving pressure generation unit; And
Mobile unit, it makes the aforesaid liquid injector head and adheres to object and relatively moves,
Lateral dominance relatively moves aforesaid liquid injector head and the above-mentioned object that adheres to above-mentioned mobile unit, and the limit makes drop be attached to the above-mentioned object that adheres to from the said nozzle injection,
Above-mentioned ejection drive pulse is the voltage waveform that comprises with the lower part, and this part is:
Current potential makes the 1st change section of the volume-variation of above-mentioned balancing gate pit by the variation of the 1st direction;
Balancing gate pit's volume that will change by the 1st change section keep certain hour, by the terminal potential of above-mentioned the 1st change section certain maintaining part; And
Current potential changes by rightabout the 2nd direction as above-mentioned the 1st direction and makes the 2nd change section that balancing gate pit's volume-variation of changing has taken place because of above-mentioned the 1st change section,
Above-mentioned the 2nd change section has: current potential is pressed the 1st of the 2nd direction variation from the terminal potential of above-mentioned the 1st change section and is changed key element, the 1st terminal potential that changes key element is kept the middle maintenance key element of certain hour and the 2nd variation key element that current potential changes by the 2nd direction from the 1st terminal potential that changes key element
This liquid injection apparatus is characterised in that,
Keep the retention time of key element above 0 and below 0.12Tc in the middle of above-mentioned, wherein, Tc represents that the liquid in the balancing gate pit produces the cycle of pressure vibration,
Keep the current potential of key element at more than 50% and below 60% of current potential of above-mentioned maintaining part in the middle of above-mentioned.
2. the control method of a liquid injection apparatus, the aforesaid liquid injection apparatus possesses: jet head liquid, this jet head liquid has nozzle, the balancing gate pit that is communicated with this nozzle of atomizing of liquids and makes the pressure generation unit that produces pressure oscillation in the liquid in this balancing gate pit, can pass through this pressure generation unit work and from nozzle ejection liquid; Drive signal generation unit, its generation comprise makes the driving signal of liquid from the ejection drive pulse of nozzle ejection for the driving pressure generation unit; And mobile unit, it makes the aforesaid liquid injector head and adheres to object and relatively moves, and the limit relatively moves aforesaid liquid injector head and the above-mentioned object that adheres to by above-mentioned mobile unit, and the limit makes drop be attached to the above-mentioned object that adheres to from the said nozzle injection,
The control method of this liquid injection apparatus comprises:
Above-mentioned ejection drive pulse is the voltage waveform that comprises with the lower part, and this part is: the 1st change section that current potential changes by the 1st direction; Certain maintaining part by the terminal potential of above-mentioned the 1st change section; And the 2nd change section that changes by rightabout the 2nd direction as above-mentioned the 1st direction of current potential,
Above-mentioned the 2nd change section has: current potential from the terminal potential of above-mentioned the 1st change section till the 2nd direction is until the way, change the 1st change key element, with the 1st terminal potential that changes key element keep certain hour in the middle of keep key element and current potential the 2nd to change key element from the 1st terminal potential that changes key element by what the 2nd direction changed
Make the 1st conversion step that the volume of above-mentioned balancing gate pit changes by above-mentioned the 1st change section;
Balancing gate pit's volume that will have been taken place to change in above-mentioned the 1st conversion step by above-mentioned maintaining part keeps the maintenance step of the scheduled time; And
Make the 2nd conversion step that balancing gate pit's volume of having taken place to change in above-mentioned the 1st conversion step changes by above-mentioned the 2nd change section,
Above-mentioned the 2nd conversion step comprises: change key element by the above-mentioned the 1st and make the balancing gate pit's volume that the 1st change process till in the way of balancing gate pit's volume-variation of changing has taken place in above-mentioned the 1st conversion step, taken place to change in the 1st change process keep the maintenance of certain hour to handle and change the 2nd change process that key element makes that maintained balancing gate pit volume changes in this maintenances processing by the above-mentioned the 2nd
The control method of this liquid injection apparatus is characterised in that,
Keep the current potential of key element at more than 50% and below 60% of current potential of above-mentioned maintaining part in the middle of above-mentioned,
Keep the retention time of key element above 0 and below 0.12Tc in the middle of above-mentioned,
Retention time during above-mentioned maintenance is handled surpasses 0 and below 0.12Tc,
Wherein, Tc represents that the liquid in the balancing gate pit produces the cycle of pressure vibration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP241121/2009 | 2009-10-20 | ||
| JP2009241121A JP2011088279A (en) | 2009-10-20 | 2009-10-20 | Liquid jet apparatus, and method for controlling liquid jet apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102069642A CN102069642A (en) | 2011-05-25 |
| CN102069642B true CN102069642B (en) | 2013-08-07 |
Family
ID=43878961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010518429.1A Active CN102069642B (en) | 2009-10-20 | 2010-10-20 | Liquid ejecting apparatus and method of controlling liquid ejecting apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20110090272A1 (en) |
| JP (1) | JP2011088279A (en) |
| CN (1) | CN102069642B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011126220A (en) * | 2009-12-21 | 2011-06-30 | Seiko Epson Corp | Liquid jetting device and method for controlling the liquid jetting device |
| JP5334271B2 (en) * | 2011-06-03 | 2013-11-06 | 富士フイルム株式会社 | Liquid ejection head drive device, liquid ejection device, and ink jet recording apparatus |
| JP5943185B2 (en) * | 2012-03-12 | 2016-06-29 | セイコーエプソン株式会社 | Liquid ejector |
| CN104245327B (en) * | 2012-05-23 | 2016-03-16 | 惠普发展公司，有限责任合伙企业 | Utilize multiple print head die to print |
| JP2013248779A (en) * | 2012-05-31 | 2013-12-12 | Seiko Epson Corp | Ink cartridge and printer |
| US9272511B2 (en) * | 2013-08-13 | 2016-03-01 | Fujifilm Dimatix, Inc. | Method, apparatus, and system to provide multi-pulse waveforms with meniscus control for droplet ejection |
| GB2536262B (en) | 2015-03-11 | 2019-09-25 | Xaar Technology Ltd | Actuator drive circuit with trim control of pulse shape |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6290315B1 (en) * | 1998-08-12 | 2001-09-18 | Seiko Epson Corporation | Method of driving an ink jet recording head |
| WO2005000589A1 (en) * | 2003-06-26 | 2005-01-06 | Ricoh Company, Ltd. | An image formation apparatus |
| CN101544112A (en) * | 2008-03-27 | 2009-09-30 | 精工爱普生株式会社 | Liquid ejecting apparatus and method of driving liquid ejecting head |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3484798B2 (en) * | 1995-01-10 | 2004-01-06 | セイコーエプソン株式会社 | Ink jet recording device |
| JP3381438B2 (en) * | 1995-01-17 | 2003-02-24 | セイコーエプソン株式会社 | Ink jet recording device |
| JP3417173B2 (en) * | 1995-11-29 | 2003-06-16 | セイコーエプソン株式会社 | Ink jet recording device |
| JP2004001562A (en) * | 2000-07-24 | 2004-01-08 | Seiko Epson Corp | Ink jet recorder |
| JP2002103620A (en) * | 2000-07-24 | 2002-04-09 | Seiko Epson Corp | Ink jet recorder and method for driving ink jet recording head |
| JP3419401B2 (en) * | 2000-09-01 | 2003-06-23 | セイコーエプソン株式会社 | Method of manufacturing ink jet recording head and ink jet recording head |
| JP2002166548A (en) * | 2000-12-01 | 2002-06-11 | Seiko Epson Corp | Method for ink jet recording |
| JP2004009479A (en) * | 2002-06-06 | 2004-01-15 | Hitachi Printing Solutions Ltd | Ink jet printer and its manufacturing process |
| JP4580201B2 (en) * | 2004-08-31 | 2010-11-10 | 京セラ株式会社 | Piezoelectric element regeneration method and liquid ejection device |
| JP4889103B2 (en) * | 2006-07-21 | 2012-03-07 | 富士フイルム株式会社 | Droplet discharge apparatus and droplet discharge method |
| JP2009220369A (en) * | 2008-03-14 | 2009-10-01 | Seiko Epson Corp | Liquid injection apparatus and driving method of liquid injection head |
-
2009
- 2009-10-20 JP JP2009241121A patent/JP2011088279A/en not_active Withdrawn
-
2010
- 2010-09-28 US US12/892,006 patent/US20110090272A1/en not_active Abandoned
- 2010-10-20 CN CN201010518429.1A patent/CN102069642B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6290315B1 (en) * | 1998-08-12 | 2001-09-18 | Seiko Epson Corporation | Method of driving an ink jet recording head |
| WO2005000589A1 (en) * | 2003-06-26 | 2005-01-06 | Ricoh Company, Ltd. | An image formation apparatus |
| CN101544112A (en) * | 2008-03-27 | 2009-09-30 | 精工爱普生株式会社 | Liquid ejecting apparatus and method of driving liquid ejecting head |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110090272A1 (en) | 2011-04-21 |
| JP2011088279A (en) | 2011-05-06 |
| CN102069642A (en) | 2011-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102069642B (en) | Liquid ejecting apparatus and method of controlling liquid ejecting apparatus | |
| CN102133813B (en) | Liquid ejecting apparatus | |
| CN101370663B (en) | Image forming device and printed matter | |
| CN102442065B (en) | Liquid ejecting apparatus and control method therefor | |
| CN102126344B (en) | Liquid ejecting apparatus and method of controlling liquid ejecting apparatus | |
| US8777349B2 (en) | Image forming apparatus including recording head for ejecting liquid droplets | |
| JP2018202713A (en) | Large-format printer | |
| US9205655B2 (en) | Image forming apparatus | |
| CN102310633A (en) | The control method of liquid injection apparatus and liquid injection apparatus | |
| JP5315697B2 (en) | Liquid ejecting head and liquid ejecting apparatus | |
| CN102476505A (en) | Liquid ejection apparatus and control method thereof | |
| US8182057B2 (en) | Liquid ejecting apparatus and method controlling liquid ejecting apparatus | |
| CN102139560A (en) | Liquid ejecting apparatus and method of controlling the same | |
| CN102294895B (en) | Liquid ejecting apparatus and method of controlling same | |
| CN102233728A (en) | Liquid ejecting apparatus | |
| US8590996B2 (en) | Liquid ejecting apparatus and method for controlling liquid ejecting apparatus | |
| JP6268929B2 (en) | Liquid ejector | |
| CN102180009B (en) | Liquid ejecting apparatus and control method thereof | |
| JP2010179585A (en) | Liquid discharge device and control method for liquid discharge device | |
| JP2010179502A (en) | Liquid discharging apparatus and control method of liquid discharging apparatus | |
| JP7435522B2 (en) | Liquid discharge device and head control method | |
| JP2014111362A (en) | Liquid discharge device | |
| JP2009083488A (en) | Inkjet printer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |